2013A&A...559A...6L


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST18:55:28

2013A&A...559A...6L - Astronomy and Astrophysics, volume 559A, 6-6 (2013/11-1)

Symbiotic stars in X-rays.

LUNA G.J.M., SOKOLOSKI J.L., MUKAI K. and NELSON T.

Abstract (from CDS):

Until recently, symbiotic binary systems in which a white dwarf accretes from a red giant were thought to be mainly a soft X-ray population. Here we describe the detection with the X-ray Telescope (XRT) on the Swift satellite of nine white dwarf symbiotics that were not previously known to be X-ray sources and one that had previously been detected as a supersoft X-ray source. The nine new X-ray detections were the result of a survey of 41 symbiotic stars, and they increase the number of symbiotic stars known to be X-ray sources by approximately 30%. The Swift/XRT telescope detected all of the new X-ray sources at energies greater than 2keV. Their X-ray spectra are consistent with thermal emission and fall naturally into three distinct groups. The first group contains those sources with a single, highly absorbed hard component that we identify as probably coming from an accretion-disk boundary layer. The second group is composed of those sources with a single, soft X-ray spectral component that probably originates in a region where low-velocity shocks produce X-ray emission, i.e., a colliding-wind region. The third group consists of those sources with both hard and soft X-ray spectral components. We also find that unlike in the optical, where rapid, stochastic brightness variations from the accretion disk typically are not seen, detectable UV flickering is a common property of symbiotic stars. Supporting our physical interpretation of the two X-ray spectral components, simultaneous Swift UV photometry shows that symbiotic stars with harder X-ray emission tend to have stronger UV flickering, which is usually associated with accretion through a disk. To place these new observations in the context of previous work on X-ray emission from symbiotic stars, we modified and extended the α/β/γ classification scheme for symbiotic-star X-ray spectra that was introduced by Muerset et al. based upon observations with the ROSAT satellite, to include a new δ classification for sources with hard X-ray emission from the innermost accretion region. Because we have identified the elusive accretion component in the emission from a sample of symbiotic stars, our results have implications for the understanding of wind-fed mass transfer in wide binaries, and the accretion rate in one class of candidate progenitors of type Ia supernovae.

Abstract Copyright:

Journal keyword(s): binaries: symbiotic - accretion, accretion disks - X-rays: binaries

Simbad objects: 80

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Number of rows : 80

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 IC 10 G 00 20 23.16 +59 17 34.7   13.6 9.5     ~ 981 0
2 V* EG And Sy* 00 44 37.1876042586 +40 40 45.703033630 10.54 8.93 7.22     M2.4III 261 0
3 NAME SMC Symbiotic star 3 Sy* 00 48 20.0195347830 -73 31 52.073758689 16.66 16.23 14.74   13.13 M0e 74 0
4 LIN 358 Sy* 00 59 12.2513125672 -75 05 17.616419274   16.82 15.34 14.90 13.77 K/Me 38 0
5 V* AX Per Sy* 01 36 22.6996835649 +54 15 02.411289057   11.45 10.67 11.04   M3IIIep+A0 274 1
6 * omi Cet Mi* 02 19 20.79210 -02 58 39.4956   7.63 6.53 5.03   M5-9IIIe+DA 1412 0
7 EM* StHA 32 Sy* 04 37 45.6311522513 -01 19 11.896504207     13.5     C1,1e_CH5 29 0
8 V* UV Aur C* 05 21 48.9137852435 +32 30 40.177257425   12.46 10.41 9.15   C8,1Je 197 0
9 HD 34842 ** 05 21 48.92 +32 30 39.8           C8,1Je+B9V 197 0
10 NAME UV Aur B * 05 21 48.9369453206 +32 30 43.561525397           B9V 6 0
11 EM* StHA 55 Mi* 05 46 42.0750250231 +06 43 47.075703758     13.5     ~ 15 0
12 CD-28 3719 Sy* 07 01 09.1554752372 -29 06 25.045492563   12.10 10.59     S6,8e 21 0
13 V* ZZ CMi LP* 07 24 13.9977815489 +08 53 51.799569213   11.10 10.20     M6I-IIep 40 0
14 EM* MWC 560 Sy* 07 25 51.2841922233 -07 44 08.078237799   10.01 9.70 10.60   M4ep+Beq 179 0
15 V* NQ Gem Sy* 07 31 54.5215639809 +24 30 12.543689289   10.19 8.01     C6,2_CH3 88 0
16 V* RX Pup Sy* 08 14 12.3036011353 -41 42 29.086820756   12.39 9.00     M5.5 189 1
17 WRAY 16-51 Em* 09 33 29.5518613168 -46 34 50.942261501   14.98 13.56 13.89 9.57 M4 10 1
18 WRAY 16-62 Sy* 09 54 43.2843108572 -57 18 52.397916164   13.77 12.92 13.01 10.93 M5-7.5 93 0
19 CD-57 3057 Sy* 10 11 02.9422954740 -57 48 13.944256831   11.26 9.99     M4IIIe 58 0
20 WRAY 15-619 Sy* 10 39 08.6763276221 -51 24 12.653435600     12.26     M7 21 0
21 V* SY Mus Sy* 11 32 09.9958009466 -65 25 11.458645897   11.97 10.20     M4 151 0
22 V* VX Crv Mi* 12 21 52.4854710255 -13 53 10.230763103   14.38 12.83 13.82   M9III 15 0
23 V* BI Cru Sy* 12 23 25.9928834665 -62 38 15.987814001 12.06 12.18 11.00 10.71   M2/3 124 0
24 V* V420 Hya Sy* 12 24 32.5102188171 -28 18 55.697223098   11.48 10.24     S4,6e 24 0
25 V* RT Cru Sy* 12 34 53.74 -64 33 56.0           ~ 76 0
26 V* TX CVn Sy* 12 44 42.0645704232 +36 45 50.622366015   10.43 9.20     B1-B9Veq+K0III-M4 111 0
27 Hen 3-863 Sy* 13 07 43.8884229100 -48 00 19.546727738     12.60     ~ 22 0
28 V* RW Hya Sy* 13 34 18.1290422733 -25 22 48.885732567   11.51 10.00     M1/2IIIe 186 0
29 WRAY 16-141 Sy* 13 54 55.6946202251 -58 27 16.514641541     15.00     K?e 59 1
30 WRAY 16-147 Sy* 14 11 52.0611401558 -51 26 24.183936749     14.20     ~ 219 1
31 WRAY 16-148 Sy* 14 14 09.4122615979 -63 25 46.331710785     14.00     Me 129 1
32 BD-21 3873 Sy* 14 16 34.2916048270 -21 45 50.037192663   12.060 10.684     K2e 70 0
33 V* V748 Cen Al* 14 59 36.6800503695 -33 25 04.058195414   11.86 11.93     Ae 30 0
34 V* T CrB Sy* 15 59 30.1619486506 +25 55 12.607985109 2.69 2.10 2.00     M3III+p 637 0
35 V* AG Dra Sy* 16 01 41.0125687664 +66 48 10.131181273 11.50 11.06 9.74 8.52   K3IIIep 474 0
36 WRAY 16-208 Sy* 16 14 01.1073903481 -56 59 28.038473712     16.00     M8/9e 84 1
37 NAME UKS-Ce1 Sy* 16 15 29.6279771715 -22 12 15.560438504       15.51 14.19 C4,5Je_CH4 28 0
38 GSC 06806-00016 LXB 16 19 33.3432979840 -28 07 39.906459998   13.7 12.749 11.0 9.978 M2III 41 0
39 NOVA Sco 1863 No* 16 22 30.7782086963 -17 52 43.162570042   8.80 8.70     F8+K2 458 0
40 Haro 1-2 Sy* 16 23 21.6448145976 -27 40 10.322760377   14.42 13.43 13.33   M4e 27 0
41 WRAY 15-1511 Sy* 16 35 15.0822559836 -51 42 27.579128028 14.14 13.92 12.78 11.47 9.80 M2e 31 0
42 [KRL2007b] 194 Psr 16 36 30 -47 37.5           Be 91 0
43 NAME AX J163904-4642 HXB 16 39 06 -46 42.2           BIV-V 78 1
44 V* KX TrA Sy* 16 44 35.4675096233 -62 37 14.057715396   11.91 11.38 12.33   M6 93 1
45 EM* AS 210 Sy* 16 51 20.41 -26 00 26.7   11.5 11.9     ~ 69 1
46 V* V934 Her LP* 17 06 34.5143100938 +23 58 18.652285813 11.20 9.16 7.62     M2III 116 0
47 Hen 3-1341 Sy* 17 08 36.5712745890 -17 26 30.407858350           M3.5 56 0
48 IGR J17197-3010 Sy* 17 19 43 -30 10.8           ~ 8 1
49 SWIFT J171951.7-300206 X 17 19 51.70 -30 02 00.6           ~ 2 1
50 [ALS82] C1 Sy* 17 19 57.6570858656 +57 50 05.482633712   18.43 17.15   15.66 C,1e 54 0
51 V* V2116 Oph Sy* 17 32 02.1544831482 -24 44 44.125962969   20.78 18.4     M6IIIe 643 1
52 V* V503 Her Sy* 17 36 40.4576646104 +23 18 11.673283928   13.53 12.57     ~ 14 0
53 V* RS Oph No* 17 50 13.1592776879 -06 42 28.481553668   12.29 4.30     OB+M2ep 908 0
54 Hen 3-1591 Sy* 18 07 32.0162055141 -25 53 43.326635637   13.0 12.0     K1III: 39 0
55 EM* AS 289 Sy* 18 12 22.1424632235 -11 40 07.117086481   10.5 12.40     M3 47 0
56 V* Y CrA Sy* 18 14 22.9509921769 -42 50 32.318792040     13.30     M6 43 1
57 EM* AS 297 Sy* 18 14 34.1920433871 +20 59 21.188200993     11.10     M2pev 135 0
58 V* FG Ser Sy* 18 15 07.1024604258 -00 18 52.284453619           M3e 105 0
59 V* AR Pav Al* 18 20 27.8818737427 -66 04 42.931712420   11.36 7.40     B1 144 0
60 EM* MWC 603 Sy* 18 22 07.8547728418 +23 27 19.933241936   12.34 11.52     M3ep+O 111 0
61 X Sct X-1 HXB 18 35 25.8244599405 -07 36 50.413463588           ~ 67 0
62 EM* AS 327 Sy* 18 53 16.6635773121 -24 22 58.804910844   11.5 13.00     M1-3 44 1
63 V* V850 Aql Mi? 19 23 34.6739852593 +00 37 58.535965490           ~ 25 2
64 V* CH Cyg Sy* 19 24 33.0697620341 +50 14 29.057625755 8.14 8.77 7.08   5.345 M7IIIab+Be 734 0
65 V* HM Sge Sy* 19 41 57.0758884476 +16 44 39.856454738   12.38 11.10     M7 432 2
66 V* CI Cyg Al* 19 50 11.8344401438 +35 41 03.000692799   11.97 9.90     Bep+M5III 403 0
67 4U 1954+31 HXB 19 55 42.3379574888 +32 05 49.039923678   12.02 9.97     M4/5III 99 0
68 EM* AS 373 Sy* 19 57 05.0184580246 +39 49 36.085051314         10.592 M6/8e 564 0
69 V* RR Tel Sy* 20 04 18.5382966387 -55 43 33.154224077 9.93 11.33 10.81     WN3-6.5+M3.5-7 513 0
70 V* PU Vul No* 20 21 13.3112218215 +21 34 18.693825946   11.13 10.87     A4II-F8Iab+M6IIIe 291 0
71 V* LT Del Sy* 20 35 57.2353984617 +20 11 27.504214453           G6III 95 1
72 V* ER Del Sy* 20 42 46.4988309007 +08 41 13.535799627   12.17 10.39     S5.5 28 0
73 V* V1329 Cyg Sy* 20 51 01.2322054447 +35 34 54.111427235           M4IIIe 292 2
74 CD-43 14304 Sy* 21 00 06.3577224043 -42 38 44.938778022     11.0     K7e 54 0
75 EM* StHA 190 Sy* 21 41 44.8880611733 +02 43 54.409367196   11.13 10.22     G5e 41 0
76 V* AG Peg Sy* 21 51 01.9733955799 +12 37 32.124041390   6.76 6.00     M3IIIe 488 0
77 EM* AS 501 LP* 22 57 40.9676229606 +58 49 12.557808847   10.5 10.9     M2II-III 98 0
78 V* Z And Sy* 23 33 39.9551345052 +48 49 05.973842875 8.86 9.35 8.00     M2III+B1eq 499 0
79 V* R Aqr Sy* 23 43 49.4629939776 -15 17 04.184232557   8.823 7.683 9.37   M6.5-8.5e 729 0
80 Kiso C1-13 C* 23 45 44.6577529273 +62 52 51.104670586     14.8     C6,2 11 0

    Equat.    Gal    SGal    Ecl

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2019.10.23-18:55:28

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